A song praising his courage was playing.

He assisted my project.

It seems that this river is flowing backwards.

Mr. Danno is a mathematics teacher.

This shape is called a great icosihemidodecahedron.

The Tōhoku earthquake off the Pacific coast, which occurred on March 11, 2011, was the largest earthquake in Japanese history.

He worked hard without giving up.

He is good at playing the character of Sao.

Three countries formed an alliance.

I always hear noise coming from his room.